X-Ray Absorption Spectroscopy beyond the Core-Hole Lifetime

1993/01/01 by K. Hämäläinen, J. B. Hastings, D. P. Siddons +1 · 1 voice
Medicine · Physics and Astronomy · #Advanced MRI Techniques and Applications #Nuclear Physics and Applications #X-ray Spectroscopy and Fluorescence Analysis

paper · doi:10.7567/jjaps.32s2.170

openalex publication_date 1993/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/20

Abstract

A new technique to overcome the core-hole lifetime broadening in x-ray absorption spectroscopy is presented. It utilizes a high resolution fluorescence spectrometer which can be used to analyze the fluorescence photon energy with better resolution than the natural lifetime width. Furthermore, the high resolution spectrometer can also be used to select the final state in the fluorescence process which can offer spin selectivity even without long range magnetic order in the sample.

Discussions

• [New questions from bounty:] Is this transition really discontinuous? It not a perfectly vertical discontinuity in the absorption spectrum of a real material. If not, what determines the width of the [stackexchange, 1 points]

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